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Our ancestors developed agriculture about twelve thousand years ago.
As they harvested the first crops, they undoubtedly1 congratulated themselves on their cleverness--after all, cultivation2 is far more efficient than hunting and gathering3. Little did they know, however, that humans were not the Earth's first farmers. Certain species of ant have been practicing agriculture for millions of years.
One example is the parasol ant of South America. The workers of this species clip large quantities of leaves from the forest and bring them back to the nest. These leaves are not eaten by the ants, but buried in a huge complex of underground chambers4. As the leaves turn to compost, the ants seed them with their favorite type of fungus5. They tend this fungus crop with great care, even weeding it to get rid of less desirable species. After a while, the fungus is harvested and eaten.
Planting and harvesting is one thing, but what would a real farm be without farm animals? Actually, humans are second to ants in this respect too. Several species of ant domesticate6 a kind of insect called an aphid. Aphids are good at sucking nutritious7 juice out of plants. In fact, they're so good at it that they often suck out more than they can digest. The extra juice is secreted8 out the back of the aphid, where an ant can milk it like a farmer milking a cow.
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1 undoubtedly | |
adv.确实地,无疑地 | |
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2 cultivation | |
n.耕作,培养,栽培(法),养成 | |
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3 gathering | |
n.集会,聚会,聚集 | |
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4 chambers | |
n.房间( chamber的名词复数 );(议会的)议院;卧室;会议厅 | |
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5 fungus | |
n.真菌,真菌类植物 | |
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6 domesticate | |
vt.驯养;使归化,使专注于家务 | |
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7 nutritious | |
adj.有营养的,营养价值高的 | |
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8 secreted | |
v.(尤指动物或植物器官)分泌( secrete的过去式和过去分词 );隐匿,隐藏 | |
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9 symbiotic | |
adj.共栖的,共生的 | |
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10 predators | |
n.食肉动物( predator的名词复数 );奴役他人者(尤指在财务或性关系方面) | |
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